安装Hue后的一些功能的问题解决干货总结
不多说，直接上干货！
我的集群机器情况是 bigdatamaster（192.168.80.10）、bigdataslave1（192.168.80.11）和bigdataslave2（192.168.80.12）
然后，安装目录是在/home/hadoop/app下。
官方建议在master机器上安装Hue，我这里也不例外。安装在bigdatamaster机器上。
Hue版本：hue-3.9.0-cdh5.5.4
需要编译才能使用（联网）
说给大家的话：大家电脑的配置好的话，一定要安装cloudera manager。毕竟是一家人的。
同时，我也亲身经历过，会有部分组件版本出现问题安装起来要个大半天时间去排除，做好心里准备。废话不多说，因为我目前读研，自己笔记本电脑最大8G，只能玩手动来练手。
纯粹是为了给身边没高配且条件有限的学生党看的！ 但我已经在实验室机器群里搭建好cloudera manager 以及 ambari都有。
大数据领域两大最主流集群管理工具Ambari和Cloudera Manger
Cloudera安装搭建部署大数据集群（图文分五大步详解）（博主强烈推荐）
Ambari安装搭建部署大数据集群（图文分五大步详解）（博主强烈推荐）
问题一：
1、HUE中Hive 查询有问题，页面报错：Could not connect to localhost:10000 或者 Could not connect to bigdatamaster:10000
解决方法：
在安装的HIVE中启动hiveserver2 &,因为端口号10000是hiveserver2服务的端口号，否则，Hue Web 控制无法执行HIVE 查询。
bigdatamaster是我机器名。
在$HIVE_HOME下
bin/hive -–service hiveserver2 &
[hadoop@bigdatamaster ~]$ cd $HIVE_HOME
[hadoop@bigdatamaster hive]$ bin/hive --service hiveserver2 &
大家，注意，以下是我的hive-site.xml里的配置信息
该问题，成功解决。
问题二：
database is locked
这应该是hue默认的SQLite数据库出现错误，你可以使用mysql postgresql等来替换
https://www.cloudera.com/documentation/enterprise/5-5-x/topics/admin_hue_ext_db.html（这是官网）
同时，参考（见https://my.oschina.net/aibati2008/blog/647493）
这篇博客：安装配置和使用hue遇到的问题汇总
# Configuration options for specifying the Desktop Database. For more info, # see http://docs.djangoproject.com/en/1.4/ref/settings/#database-engine # ------------------------------------------------------------------------ [[database]] # Database engine is typically one of: # postgresql_psycopg2, mysql, sqlite3 or oracle. # # Note that for sqlite3, 'name', below is a path to the filename. For other backends, it is the database name. # Note for Oracle, options={"threaded":true} must be set in order to avoid crashes. # Note for Oracle, you can use the Oracle Service Name by setting "port=0" and then "name=: ". # Note for MariaDB use the 'mysql' engine. ## engine=sqlite3 ## host= ## port= ## user= ## password= ## name=desktop/desktop.db ## options={}/
以上是默认的。
hue默认使用sqlite作为元数据库，不推荐在生产环境中使用。会经常出现database is lock的问题。
解决方法：
其实官网也有解决方法，不过过程似乎有点问题。而且并不适合3.7之后的版本。我现在使用的是3.11，以下是总结的最快的切换方法。
[root@bigdatamaster hadoop]# mysql -uhive -phive Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 49 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | hive | | mysql | | oozie | | test | +--------------------+ 5 rows in set (0.07 sec) mysql>
因为，我这里是，用户为hive，密码也为hive，然后，数据库也为hive，所以如下：
# Configuration options for specifying the Desktop Database. For more info, # see http://docs.djangoproject.com/en/1.4/ref/settings/#database-engine # ------------------------------------------------------------------------ [[database]] # Database engine is typically one of: # postgresql_psycopg2, mysql, sqlite3 or oracle. # # Note that for sqlite3, 'name', below is a path to the filename. For other backends, it is the database name. # Note for Oracle, options={"threaded":true} must be set in order to avoid crashes. # Note for Oracle, you can use the Oracle Service Name by setting "port=0" and then "name=: ". # Note for MariaDB use the 'mysql' engine. engine=mysql host=bigdatamaster port=3306 user=hive password=hive name=hive ## options={}/
然后，重启hue进程
[hadoop@bigdatamaster hue]$ build/env/bin/supervisor
完成以上的这个配置，启动Hue,通过浏览器访问，会发生错误，原因是mysql数据库没有被初始化
DatabaseError: (1146, "Table 'hue.desktop_settings' doesn't exist")
或者
ProgrammingError: (1146, "Table 'hive.django_session' doesn't exist")
初始化数据库
/home/hadoop/app/hue-3.9.0-cdh5.5.4/build/env
bin/hue syncdb bin/hue migrate执行完以后，可以在mysql中看到，hue相应的表已经生成。
启动hue, 能够正常访问了。
或者
当然，大家这里，可以先在mysql里面创建数据库。命名为hue，并且是以hadoop用户和hadoop密码。
首先，
[root@master app]# mysql -uroot -prootroot mysql> create user 'hue' identified by 'hue'; //创建一个账号：用户名为hue，密码为hue
或者
mysql> create user 'hue'@'%' identified by 'hue'; //创建一个账号：用户名为hue，密码为hue
mysql> GRANT ALL PRIVILEGES ON *.* to 'hue'@'%' IDENTIFIED BY 'hue' WITH GRANT OPTION; //将权限授予host为%即所有主机的hue用户
mysql> GRANT ALL PRIVILEGES ON *.* to 'hue'@'bigdatamaster' IDENTIFIED BY 'hue' WITH GRANT OPTION; //将权限授予host为master的hue用户
mysql> GRANT ALL PRIVILEGES ON *.* to 'hue'@'localhost' IDENTIFIED BY 'hue' WITH GRANT OPTION; //将权限授予host为localhost的hue用户（其实这一步可以不配）
mysql> GRANT ALL PRIVILEGES ON *.* to 'hue'@'bigdatamaster' IDENTIFIED BY 'hue' WITH GRANT OPTION; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> select user,host,password from mysql.user; +-------+---------------+-------------------------------------------+ | user | host | password | +-------+---------------+-------------------------------------------+ | root | localhost | | | root | bigdatamaster | | | root | 127.0.0.1 | | | | localhost | | | | bigdatamaster | | | hive | % | *4DF1D66463C18D44E3B001A8FB1BBFBEA13E27FC | | hive | bigdatamaster | *4DF1D66463C18D44E3B001A8FB1BBFBEA13E27FC | | hive | localhost | *4DF1D66463C18D44E3B001A8FB1BBFBEA13E27FC | | oozie | % | *2B03FE0359FAD3B80620490CE614F8622E0828CD | | oozie | bigdatamaster | *2B03FE0359FAD3B80620490CE614F8622E0828CD | | oozie | localhost | *2B03FE0359FAD3B80620490CE614F8622E0828CD | | hue | % | *15221DE9A04689C4D312DEAC3B87DDF542AF439E | | hue | localhost | *15221DE9A04689C4D312DEAC3B87DDF542AF439E | | hue | bigdatamaster | *15221DE9A04689C4D312DEAC3B87DDF542AF439E | +-------+---------------+-------------------------------------------+ 15 rows in set (0.00 sec) mysql> exit; Bye [root@bigdatamaster hadoop]#
# Configuration options for specifying the Desktop Database. For more info, # see http://docs.djangoproject.com/en/1.4/ref/settings/#database-engine # ------------------------------------------------------------------------ [[database]] # Database engine is typically one of: # postgresql_psycopg2, mysql, sqlite3 or oracle. # # Note that for sqlite3, 'name', below is a path to the filename. For other backends, it is the database name. # Note for Oracle, options={"threaded":true} must be set in order to avoid crashes. # Note for Oracle, you can use the Oracle Service Name by setting "port=0" and then "name=: ". # Note for MariaDB use the 'mysql' engine. engine=mysql host=bigdatamaster port=3306 user=hue password=hue name=hue ## options={}/
完成以上的这个配置，启动Hue,通过浏览器访问，会发生错误。比如如下
如果大家遇到这个问题，别忘记还要创建数据库命名为hue。
OperationalError: (1049, "Unknown database 'hue'")
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | hive | | mysql | | oozie | | test | +--------------------+ 5 rows in set (0.00 sec) mysql> CREATE DATABASE hue; Query OK, 1 row affected (0.49 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> exit; Bye [root@bigdatamaster hadoop]#
启动hue之后，比如如下的错误，原因是mysql数据库没有被初始化。
ProgrammingError: (1146, "Table 'hue.django_session' doesn't exist")
则初始化数据库
cd /home/hadoop/app/hue-3.9.0-cdh5.5.4/build/env
bin/hue syncdb bin/hue migrate
具体如下（这里一定要注意啦！！！先看完，再动手）
这里，大家一定要注意啊，如果这里你输入的是默认提示hadoop，则在登录的时候就是为hadoop啦。
当然若这里，大家弄错了的话，还可以如我下面这样进行来弥补。
第一步：
所以，这样下来，不太好。
所以我这里，为了避免这个情况发生，直接输入用户名为hue，密码也是为hue。
[hadoop@bigdatamaster env]$ pwd /home/hadoop/app/hue-3.9.0-cdh5.5.4/build/env [hadoop@bigdatamaster env]$ ll total 12 drwxrwxr-x 2 hadoop hadoop 4096 May 5 20:59 bin drwxrwxr-x 2 hadoop hadoop 4096 May 5 20:46 include drwxrwxr-x 3 hadoop hadoop 4096 May 5 20:46 lib lrwxrwxrwx 1 hadoop hadoop 3 May 5 20:46 lib64 -> lib -rw-rw-r-- 1 hadoop hadoop 0 May 5 20:46 stamp [hadoop@bigdatamaster env]$ bin/hue syncdb Syncing... Creating tables ... Creating table auth_permission Creating table auth_group_permissions Creating table auth_group Creating table auth_user_groups Creating table auth_user_user_permissions Creating table auth_user Creating table django_openid_auth_nonce Creating table django_openid_auth_association Creating table django_openid_auth_useropenid Creating table django_content_type Creating table django_session Creating table django_site Creating table django_admin_log Creating table south_migrationhistory Creating table axes_accessattempt Creating table axes_accesslog You just installed Django's auth system, which means you don't have any superusers defined. Would you like to create one now? (yes/no): yes Username (leave blank to use 'hadoop'): hue Email address: Password: hue Password (again): Superuser created successfully. Installing custom SQL ... Installing indexes ... Installed 0 object(s) from 0 fixture(s) Synced: > django.contrib.auth > django_openid_auth > django.contrib.contenttypes > django.contrib.sessions > django.contrib.sites > django.contrib.staticfiles > django.contrib.admin > south > axes > about > filebrowser > help > impala > jobbrowser > metastore > proxy > rdbms > zookeeper > indexer Not synced (use migrations): - django_extensions - desktop - beeswax - hbase - jobsub - oozie - pig - search - security - spark - sqoop - useradmin (use ./manage.py migrate to migrate these) [hadoop@bigdatamaster env]$
然后，再
[hadoop@bigdatamaster env]$ pwd /home/hadoop/app/hue-3.9.0-cdh5.5.4/build/env [hadoop@bigdatamaster env]$ bin/hue migrate Running migrations for django_extensions: - Migrating forwards to 0001_empty. > django_extensions:0001_empty - Loading initial data for django_extensions. Installed 0 object(s) from 0 fixture(s) Running migrations for desktop: - Migrating forwards to 0016_auto__add_unique_document2_uuid_version_is_history. > pig:0001_initial > oozie:0001_initial > oozie:0002_auto__add_hive > oozie:0003_auto__add_sqoop > oozie:0004_auto__add_ssh > oozie:0005_auto__add_shell > oozie:0006_auto__chg_field_java_files__chg_field_java_archives__chg_field_sqoop_f > oozie:0007_auto__chg_field_sqoop_script_path > oozie:0008_auto__add_distcp > oozie:0009_auto__add_decision > oozie:0010_auto__add_fs > oozie:0011_auto__add_email > oozie:0012_auto__add_subworkflow__chg_field_email_subject__chg_field_email_body > oozie:0013_auto__add_generic > oozie:0014_auto__add_decisionend > oozie:0015_auto__add_field_dataset_advanced_start_instance__add_field_dataset_ins > oozie:0016_auto__add_field_coordinator_job_properties > oozie:0017_auto__add_bundledcoordinator__add_bundle > oozie:0018_auto__add_field_workflow_managed > oozie:0019_auto__add_field_java_capture_output > oozie:0020_chg_large_varchars_to_textfields > oozie:0021_auto__chg_field_java_args__add_field_job_is_trashed > oozie:0022_auto__chg_field_mapreduce_node_ptr__chg_field_start_node_ptr > oozie:0022_change_examples_path_format - Migration 'oozie:0022_change_examples_path_format' is marked for no-dry-run. > oozie:0023_auto__add_field_node_data__add_field_job_data > oozie:0024_auto__chg_field_subworkflow_sub_workflow > oozie:0025_change_examples_path_format - Migration 'oozie:0025_change_examples_path_format' is marked for no-dry-run. > desktop:0001_initial > desktop:0002_add_groups_and_homedirs > desktop:0003_group_permissions > desktop:0004_grouprelations > desktop:0005_settings > desktop:0006_settings_add_tour > beeswax:0001_initial > beeswax:0002_auto__add_field_queryhistory_notify > beeswax:0003_auto__add_field_queryhistory_server_name__add_field_queryhistory_serve > beeswax:0004_auto__add_session__add_field_queryhistory_server_type__add_field_query > beeswax:0005_auto__add_field_queryhistory_statement_number > beeswax:0006_auto__add_field_session_application > beeswax:0007_auto__add_field_savedquery_is_trashed > beeswax:0008_auto__add_field_queryhistory_query_type > desktop:0007_auto__add_documentpermission__add_documenttag__add_document /home/hadoop/app/hue-3.9.0-cdh5.5.4/build/env/lib/python2.6/site-packages/Django-1.6.10-py2.6.egg/django/db/backends/mysql/base.py:124: Warning: Some non-transactional changed tables couldn't be rolled back return self.cursor.execute(query, args) > desktop:0008_documentpermission_m2m_tables > desktop:0009_auto__chg_field_document_name > desktop:0010_auto__add_document2__chg_field_userpreferences_key__chg_field_userpref > desktop:0011_auto__chg_field_document2_uuid > desktop:0012_auto__chg_field_documentpermission_perms > desktop:0013_auto__add_unique_documenttag_owner_tag > desktop:0014_auto__add_unique_document_content_type_object_id > desktop:0015_auto__add_unique_documentpermission_doc_perms > desktop:0016_auto__add_unique_document2_uuid_version_is_history - Loading initial data for desktop. Installed 0 object(s) from 0 fixture(s) Running migrations for beeswax: - Migrating forwards to 0013_auto__add_field_session_properties. > beeswax:0009_auto__add_field_savedquery_is_redacted__add_field_queryhistory_is_reda > beeswax:0009_auto__chg_field_queryhistory_server_port > beeswax:0010_merge_database_state > beeswax:0011_auto__chg_field_savedquery_name > beeswax:0012_auto__add_field_queryhistory_extra > beeswax:0013_auto__add_field_session_properties - Loading initial data for beeswax. Installed 0 object(s) from 0 fixture(s) Running migrations for hbase: - Migrating forwards to 0001_initial. > hbase:0001_initial - Loading initial data for hbase. Installed 0 object(s) from 0 fixture(s) Running migrations for jobsub: - Migrating forwards to 0006_chg_varchars_to_textfields. > jobsub:0001_initial > jobsub:0002_auto__add_ooziestreamingaction__add_oozieaction__add_oozieworkflow__ad > jobsub:0003_convertCharFieldtoTextField > jobsub:0004_hue1_to_hue2 - Migration 'jobsub:0004_hue1_to_hue2' is marked for no-dry-run. > jobsub:0005_unify_with_oozie - Migration 'jobsub:0005_unify_with_oozie' is marked for no-dry-run. > jobsub:0006_chg_varchars_to_textfields - Loading initial data for jobsub. Installed 0 object(s) from 0 fixture(s) Running migrations for oozie: - Migrating forwards to 0027_auto__chg_field_node_name__chg_field_job_name. > oozie:0026_set_default_data_values - Migration 'oozie:0026_set_default_data_values' is marked for no-dry-run. > oozie:0027_auto__chg_field_node_name__chg_field_job_name - Loading initial data for oozie. Installed 0 object(s) from 0 fixture(s) Running migrations for pig: - Nothing to migrate. - Loading initial data for pig. Installed 0 object(s) from 0 fixture(s) Running migrations for search: - Migrating forwards to 0003_auto__add_field_collection_owner. > search:0001_initial > search:0002_auto__del_core__add_collection > search:0003_auto__add_field_collection_owner - Loading initial data for search. Installed 0 object(s) from 0 fixture(s) ? You have no migrations for the 'security' app. You might want some. Running migrations for spark: - Migrating forwards to 0001_initial. > spark:0001_initial - Loading initial data for spark. Installed 0 object(s) from 0 fixture(s) Running migrations for sqoop: - Migrating forwards to 0001_initial. > sqoop:0001_initial - Loading initial data for sqoop. Installed 0 object(s) from 0 fixture(s) Running migrations for useradmin: - Migrating forwards to 0006_auto__add_index_userprofile_last_activity. > useradmin:0001_permissions_and_profiles - Migration 'useradmin:0001_permissions_and_profiles' is marked for no-dry-run. > useradmin:0002_add_ldap_support - Migration 'useradmin:0002_add_ldap_support' is marked for no-dry-run. > useradmin:0003_remove_metastore_readonly_huepermission - Migration 'useradmin:0003_remove_metastore_readonly_huepermission' is marked for no-dry-run. > useradmin:0004_add_field_UserProfile_first_login > useradmin:0005_auto__add_field_userprofile_last_activity > useradmin:0006_auto__add_index_userprofile_last_activity - Loading initial data for useradmin. Installed 0 object(s) from 0 fixture(s) [hadoop@bigdatamaster env]$
执行完以后，可以在mysql中看到，hue相应的表已经生成。
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | hive | | hue | | mysql | | oozie | | test | +--------------------+ 6 rows in set (0.06 sec) mysql> use hue; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +--------------------------------+ | Tables_in_hue | +--------------------------------+ | auth_group | | auth_group_permissions | | auth_permission | | auth_user | | auth_user_groups | | auth_user_user_permissions | | axes_accessattempt | | axes_accesslog | | beeswax_metainstall | | beeswax_queryhistory | | beeswax_savedquery | | beeswax_session | | desktop_document | | desktop_document2 | | desktop_document2_dependencies | | desktop_document2_tags | | desktop_document_tags | | desktop_documentpermission | | desktop_documenttag | | desktop_settings | | desktop_userpreferences | | django_admin_log | | django_content_type | | django_openid_auth_association | | django_openid_auth_nonce | | django_openid_auth_useropenid | | django_session | | django_site | | documentpermission_groups | | documentpermission_users | | jobsub_checkforsetup | | jobsub_jobdesign | | jobsub_jobhistory | | jobsub_oozieaction | | jobsub_ooziedesign | | jobsub_ooziejavaaction | | jobsub_ooziemapreduceaction | | jobsub_ooziestreamingaction | | oozie_bundle | | oozie_bundledcoordinator | | oozie_coordinator | | oozie_datainput | | oozie_dataoutput | | oozie_dataset | | oozie_decision | | oozie_decisionend | | oozie_distcp | | oozie_email | | oozie_end | | oozie_fork | | oozie_fs | | oozie_generic | | oozie_history | | oozie_hive | | oozie_java | | oozie_job | | oozie_join | | oozie_kill | | oozie_link | | oozie_mapreduce | | oozie_node | | oozie_pig | | oozie_shell | | oozie_sqoop | | oozie_ssh | | oozie_start | | oozie_streaming | | oozie_subworkflow | | oozie_workflow | | pig_document | | pig_pigscript | | search_collection | | search_facet | | search_result | | search_sorting | | south_migrationhistory | | useradmin_grouppermission | | useradmin_huepermission | | useradmin_ldapgroup | | useradmin_userprofile | +--------------------------------+ 80 rows in set (0.00 sec) mysql>
启动hue, 能够正常访问了。
[hadoop@bigdatamaster hue-3.9.0-cdh5.5.4]$ pwd /home/hadoop/app/hue-3.9.0-cdh5.5.4 [hadoop@bigdatamaster hue-3.9.0-cdh5.5.4]$ build/env/bin/supervisor
问题三：
Error loading MySQLdb module: libmysqlclient_r.so.16: cannot open shared object file: No such file or directory
解决办法
把安装mysql 的虚拟机里找一个直接把libmysqlclient.so.18这个文件拷贝到系统指定的/usr/lib64库文件目录中。
大家，注意，以下是我的hive-site.xml配置信息，我的hive是安在bigdatamaster机器上，
我的这里配置是，
# Database options to send to the server when connecting. # https://docs.djangoproject.com/en/1.4/ref/databases/ ## options={} # mysql, oracle, or postgresql configuration. [[[mysql]]] # Name to show in the UI. nice_name="My SQL DB" # For MySQL and PostgreSQL, name is the name of the database. # For Oracle, Name is instance of the Oracle server. For express edition # this is 'xe' by default. name=hive # Database backend to use. This can be: # 1. mysql # 2. postgresql # 3. oracle engine=mysql # IP or hostname of the database to connect to. host=bigdatamaster # Port the database server is listening to. Defaults are: # 1. MySQL: 3306 # 2. PostgreSQL: 5432 # 3. Oracle Express Edition: 1521 port=3306 # Username to authenticate with when connecting to the database. user=hive # Password matching the username to authenticate with when # connecting to the database. password=hive # Database options to send to the server when connecting. # https://docs.djangoproject.com/en/1.4/ref/databases/ ## options={}
该问题成功得到解决！
问题四（跟博文的问题十五一样）
点击“File Browser”报错：
Cannot access:/user/admin."注：您是hue管理员，但不是HDFS超级用户（即“”HDFS“”）
解决方法：
在$HADOOP_HOME的etc/hadoop中编辑core-site.xml文件,增加
hadoop.proxyuser.oozie.hosts * hadoop.proxyuser.ozzie.groups * hadoop.proxyuser.hue.hosts * hadoop.proxyuser.hue.groups *
然后重启hadoop，stop-all.sh----->start-all.sh即可。
该问题成功得到解决!
我一般配置是如下，在$HADOOP_HOME/etc/hadoop/下的core-site.xml里
hadoop.proxyuser.hadoop.hosts * hadoop.proxyuser.hadoop.groups * hadoop.proxyuser.hue.hosts * hadoop.proxyuser.hue.groups * hadoop.proxyuser.hdfs.hosts * hadoop.proxyuser.hdfs.groups *
为什么要这么加，是因为，我有三个用户，
这里，大家根据自己的实情去增加，修改完之后，一定要重启sbin/start-all.sh，就能解决问题了。
问题五
在Hue对HBase集成时， HBase Browser 里出现 Api Error: TSocket read 0 bytes
解决办法
https://stackoverflow.com/questions/20415493/api-error-tsocket-read-0-bytes-when-using-hue-with-hbase
Add this to your hbase "core-site.conf":
hbase.thrift.support.proxyuser true hbase.regionserver.thrift.http true
即可，解决问题。
问题六：
User: hadoop is not allowed to impersonate hue
Api 错误： Problem accessing /. Reason: HTTP ERROR 500
User: hadoop is not allowed to impersonate hue
Caused by:
javax.servlet.ServletException: User: hadoop is not allowed to impersonate hue at org.apache.hadoop.hbase.thrift.ThriftHttpServlet.doPost(ThriftHttpServlet.java:117) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:767) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelE
解决办法
$HADOOP_HOME/ect/hadoop的core-site.xml里
hadoop.proxyuser.hue.hosts
*
hadoop.proxyuser.hue.groups
*
改为
hadoop.proxyuser.hue.hosts
hadoop
hadoop.proxyuser.hue.groups
hadoop
问题七
Api 错误：集群配置 (Cluster|bigdatamaster:9090 的格式设置不正确。
改为
问题八：
在hue里面查看HDFS文件浏览器报错:
当前用户没有权限查看,
cause:org.apache.hadoop.ipc.StandbyException: Operation category READ is not supported in state standby
解决方案:
Web页面查看两个NameNode状态，是不是之前的namenode是standby状态了. 我现有的集群就是这种情况, 由于之前的服务是master1起的, 挂了之后自动切换到master2, 但是hue中webhdfs还是配置的master1,导致在hue中没有访问权限.
问题九
hive查询时报错
org.apache.hive.service.cli.HiveSQLException: Couldn't find log associated with operation handle: OperationHandle [opType=EXECUTE_STATEMENT, getHandleIdentifier()=b3d05ca6-e3e8-4bef-b869-0ea0732c3ac5]
解决方案:
将hive-site.xml中的hive.server2.logging.operation.enabled=true;
hive.server2.logging.operation.enabled true
问题十
启动hue web端 报错误：OperationalError: attempt to write a readonly database
解决办法
启动hue server的用户没有权限去写入默认sqlite DB，同时确保安装目录下所有文件的owner都是hadoop用户
chown -R hadoop:hadoop hue-3.9.0-cdh5.5.4
问题十一
HUE 报错误：Filesystem root ‘/’ should be owned by ‘hdfs’
hue 文件系统根目录“/”应归属于“hdfs”
解决方法
修改 文件desktop/libs/hadoop/src/hadoop/fs/webhdfs.py 中的 DEFAULT_HDFS_SUPERUSER = ‘hdfs’ 更改为你的hadoop用户
问题十二
错误：hbase-site.xml 配置文件中缺少 kerberos 主体名称。
解决办法
问题十三
Hue下无法无法正确连接到 Zookeeper timed out
解决办法
说明你的zookeeper模块，还没配置完全。
HUE配置文件hue.ini 的zookeeper模块详解（图文详解）（分HA集群）
问题十四
Sqoop 错误:
解决办法
看下自己的sqoop版本是不是，不是Sqoop2版本。好比我的如下
大家要注意，Hue里是只支持Sqoop2版本，对于Sqoop1和Sqoop2版本，直接去官网看就得了。
那么，得更换sqoop版本。
sqoop2-1.99.5-cdh5.5.4.tar.gz的部署搭建
问题十五（见本博客的问题四）
无法访问：/user/hadoop。 Note: you are a Hue admin but not a HDFS superuser, "hdfs" or part of HDFS supergroup, "supergroup".
SecurityException: Failed to obtain user group information: org.apache.hadoop.security.authorize.AuthorizationException: User: hue is not allowed to impersonate hadoop (error 403)
问题分析
那是因为，HUE安装完成之后，第一次登录的用户就是HUE的超级用户，可以管理用户，等等。但是在用的过程发现一个问题这个用户不能管理HDFS中由supergroup创建的数据。
虽然在HUE中创建的用户可以管理自己文件夹下面的数据/user/XXX。那么Hadoop superuser的数据怎么管理呢，ＨＵＥ提供了一个功能就是将Unix的用户和Hue集成，这样用Hadoop superuser的用户登录到ＨＵＥ中就能顺利的管理数据了。
下面几个步骤来进行集成
第一步：确保hadoop 这个用户组在系统之中（这个hadoop肯定是在系统中了）
第二步：运行下面命令
[hadoop@bigdatamaster env]$ pwd /home/hadoop/app/hue-3.9.0-cdh5.5.4/build/env [hadoop@bigdatamaster env]$ ll total 16 drwxrwxr-x 2 hadoop hadoop 4096 May 5 20:59 bin drwxrwxr-x 2 hadoop hadoop 4096 May 5 20:46 include drwxrwxr-x 3 hadoop hadoop 4096 May 5 20:46 lib lrwxrwxrwx 1 hadoop hadoop 3 May 5 20:46 lib64 -> lib drwxrwxr-x 2 hadoop hadoop 4096 Aug 2 17:20 logs -rw-rw-r-- 1 hadoop hadoop 0 May 5 20:46 stamp [hadoop@bigdatamaster env]$ bin/hue useradmin_sync_with_unix [hadoop@bigdatamaster env]$
第三步：
运行完上面的命令，进入到ＨＵＥ总你就会发现用户已经集成进来了，但是，没有密码，所以需要给Ｕｎｉｘ的用户设定密码和分配用户组。
这里，
或者
完成上述步骤之后，登陆进去，就能愉快地管理ＨＤＦＳ数据了。
HUE新建HDFS目录
问题描述: you are a Hue admin but not a HDFS superuser, “hdfs” or part of HDFS supergroup, “supergroup”
解决方案：在hue中新增hdfs用户，以hdfs用户登录创建目录和上传文件参考
https://geosmart.github.io/2015/10/27/CDH%E4%BD%BF%E7%94%A8%E9%97%AE%E9%A2%98%E8%AE%B0%E5%BD%95/
然后，其实还是没有成功，
说白了，这个问题还是要看本博文的问题四
我一般配置是如下，在$HADOOP_HOME/etc/hadoop/下的core-site.xml里
hadoop.proxyuser.hadoop.hosts * hadoop.proxyuser.hadoop.groups * hadoop.proxyuser.hue.hosts * hadoop.proxyuser.hue.groups * hadoop.proxyuser.hdfs.hosts * hadoop.proxyuser.hdfs.groups * 为什么要这么加，是因为，我有三个用户，
这里，大家根据自己的实情去增加，修改完之后，一定要重启sbin/start-all.sh，就能解决问题了。
问题十六
无法为用户hue创建主目录， 无法为用户hadoop创建主目录，无法为用户hdfs创建主目录。
解决办法
在$hadoop/etc/hadoop/core-site.xml
hadoop.proxyuser.hue.hosts * hadoop.proxyuser.hue.groups *
比如，以下是无法为用户hdfs创建主目录，则
hadoop.proxyuser.hdfs.hosts * hadoop.proxyuser.hdfs.groups *
成功！
问题十七
User [hue] not defined as proxyuser
问题来源：
The oozie is running, when I click WorkFlows, there appares a error
即，oozie启动后，当我在hue界面点击workfolws后，出现如下的错误
解决办法
Hue submits MapReduce jobs to Oozie as the logged in user. You need to configure Oozie to accept the
hueuser to be a proxyuser. Specify this in youroozie-site.xml(even in a non-secure cluster), and restart Oozie:oozie.service.ProxyUserService.proxyuser.hue.hosts * oozie.service.ProxyUserService.proxyuser.hue.groups * 参考： http://archive.cloudera.com/cdh4/cdh/4/hue-2.0.0-cdh4.0.1/manual.html
即，在oozie-site.xml配置文件里，加入
添加好之后，然后重启oozie。记得先jps下进程，Kill掉，再重启。
注意：/home/hadoop/app/oozie是我安装oozie的目录。
或者执行以下命令重启也是可以的。
[hadoop@bigdatamaster oozie]$ pwd /home/hadoop/app/oozie [hadoop@bigdatamaster oozie]$ bin/oozied.sh restart
然后，得到
问题十八
Oozie 服务器未运行
解决办法
Oozie的详细启动步骤（CDH版本的3节点集群）
问题十九
Api 错误：('Connection aborted.', error(111, 'Connection refused'))
解决办法
问题二十
Could not connect to bigdatamaster:21050
解决办法
开启impala服务
问题二十一：
OperationalError: (2003, "Can't connect to MySQL server on 'bigdatamaster' (111)")
解决办法
[root@bigdatamaster hadoop]# service mysqld start Starting mysqld: [ OK ] [root@bigdatamaster hadoop]#再刷新即可。
作者：好记性不如烂笔头！
出处：http://www.cnblogs.com/zlslch/